Results 21 to 30 of about 13,545 (201)

Improvement of Lunar Surface Dating Accuracy Utilizing Crater Degradation Model: A Case Study of the Chang’e-5 Sampling Area

open access: yesRemote Sensing, 2023
Taking the Chang’e-5 (CE-5) sampling area as an example, this study carried out an investigation on improving the crater size-frequency distribution (CSFD) dating accuracy of lunar surface geologic units based on the crater degradation model.
Feiyue Zhao, Wei Zuo, Chunlai Li
doaj   +1 more source

Chronology of the Basalt Units Surrounding Chang’e-4 Landing Area

open access: yesRemote Sensing, 2021
The Chang’e-4 (CE-4) lunar probe, the first soft landing spacecraft on the far side of the Moon, successfully landed in the Von Kármán crater on 3 January 2019. Geological studies of the landing area have been conducted and more intensive studies will be
Zongyu Yue   +6 more
doaj   +1 more source

Processes culminating in the 2015 phreatic explosion at Lascar volcano, Chile, evidenced by multiparametric data [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2020
Small steam-driven volcanic explosions are common at volcanoes worldwide but are rarely documented or monitored; therefore, these events still put residents and tourists at risk every year.
A. Gaete   +8 more
doaj   +1 more source

Mercury's geochronology revised by applying Model Production Functions to Mariner 10 data: geological implications [PDF]

open access: yes, 2009
Model Production Function chronology uses dynamic models of the Main Belt Asteroids (MBAs) and Near Earth Objects (NEOs) to derive the impactor flux to a target body.
Blewett   +30 more
core   +1 more source

New Evidence to Support Zephyria Tholus as a Composite Volcano on Mars

open access: yesRemote Sensing, 2021
Zephyria Tholus has been proposed to be a composite volcano, however, detailed geomorphological study was not carried out due to limited high-resolution remote sensing data.
Le Wang   +3 more
doaj   +1 more source

On the importance of self-secondaries

open access: yesGeoscience Letters, 2018
Self-secondaries are secondary craters that are formed on both the continuous ejecta deposits and interior of the parent crater. The possible existence of self-secondaries was proposed in the late 1960s, but their identity, formation mechanism, and ...
Zhiyong Xiao
doaj   +1 more source

Modeling the Chronologies and Size Distributions of Ceres and Vesta Craters [PDF]

open access: yesThe Astronomical Journal, 2020
Abstract We infer the crater chronologies of Ceres and Vesta from a self-consistent dynamical model of asteroid impactors. The model accounts for planetary migration/instability early in the history of our solar system and tracks asteroid orbits over 4.56 Gyr. It is calibrated on the current population of the asteroid belt.
F. Roig, D. Nesvorný
openaire   +2 more sources

The Geological History of the Chang’e-5 Sample Return Region

open access: yesRemote Sensing, 2021
Chang’e-5 (CE-5), China’s first sample-return mission, has successfully landed in Oceanus Procellarum near Mons Rümker. It is important to have a detailed study of the geological evolution of the CE-5 sample return region.
Jiayin Deng   +5 more
doaj   +1 more source

Chronology of Lake El'gygytgyn sediments – a combined magnetostratigraphic, palaeoclimatic and orbital tuning study based on multi-parameter analyses [PDF]

open access: yesClimate of the Past, 2013
A 318-metre-long sedimentary profile drilled by the International Continental Scientific Drilling Program (ICDP) at Site 5011-1 in Lake El'gygytgyn, Far East Russian Arctic, has been analysed for its sedimentologic response to global climate modes by ...
N. R. Nowaczyk   +10 more
doaj   +1 more source

NanoSIMS and EPMA dating of lunar zirconolite

open access: yesProgress in Earth and Planetary Science, 2021
Zirconolite is a common Zr-rich accessary mineral in mafic rocks. It is also an ideal U–Pb/Pb–Pb chronometer because it commonly contains high U content (mostly 0.1–10 wt%) and negligible initial Pb.
Nian Wang   +4 more
doaj   +1 more source

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